“礼券”用英语怎么说？

人们很想独占礼券。People were very possessive about their coupons.在百货公司里，凡是已经兑换的礼券都会在上面盖上将其注销的商店的详细信息。In a department store when a gift voucher is exchanged it's stamped with the details of the store to cancel it.这是第5张礼券，你需要...